Edwards, Heather M., 1947-, author
Scarecrow Press, 1990
Buku Teks
Thompson, James, author
Clive Bingley, 1987
Buku Teks
Thompson, James, author
Clive Bingley , 1987
Buku Teks
Jackson, Meredith
The University of Sydney, 2007
Multimedia
Depdikbud, 1995
Buku Referensi